My source of Vermi-liquid is OurVitalEarth. They use the Australian system to make a concentrate that dilutes 50-1.
Every batch I get is lab analyzed before release. The concentrate has been tested to show it is still full strength after one year on the shelf.
Normal home made vermi-liquid has a life of only 2-3 days. This is not a problem if you make your own and use it but makes it impossible to distribute to big box stores.
The product sold in Home Depot comes from a New York company who because of law suits admits they now boil the product before distribution.
The OVE product needs to have the caps slightly loose to allow oxygen to reach the microbes. This is not a problem for me or a hobbyist using the product, but big box stores would never do it.
The product is enhanced by the company adding ground minerals to the worm bed that adds 76 micro-nutrients to the vermi-liquid. Bracillus bacteria is also added to the feed. I add more bracillus in the form of Companion brand product from Growth Products.
Every time I talk to them I learn the science of making the product. It is amazing how they keep track of the feed given to the worms. It is a balance of shredded paper, plant greens and organic cow manure. If a lab analysis comes back insufficient in any degree the feed is adjusted and the vermi-liquid recycled until it meets their consistent release standard.
I have been a distributor of their product for two years as well as a distributor of products from Growth Products. Over this time thousands of people have tried the products from just from me and the glowing remarks I hear and repeat orders convinces me.
I have run numerous tests on orchids and results are published with photos at
http://orchidsamore.com/disease%20an...structions.htm
http://orchidsamore.com/disease%20an...%20results.htm